Leopoldius

Leopoldius are yellow on black Conopids,
which are easily mistaken for a Conops on first
sight. Their snout is short, however, and L. signatus
appears in September when Conops is gone. Adults
visit flowes. The key follows Kröber (1925) and De Bree, Smit and
Mortelmans (2014).

Females, theca at the ventral side of the
body. From left to right (or top to bottom on small screens): L.
diadematus and L. valvatus with a small
theka
and L.
coronatus
with a wide theca. After De Bree et al. (2014).